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| Registros recuperados: 18 | |
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| Fournier, D.; Foucaud, J.; Loiseau, A.; Cros-Arteil, S.; Jourdan, H.; Orivel, J.; Le Breton, J.; Chazeau, J.; Dejean, A.; Keller, L.; Estoup, A.. |
| Highly polymorphic genetic markers provide a useful tool for estimating genetic parametersin studies of the evolution of sociality in insects. We isolated and characterized 12 polymorphicmicrosatellite loci in the invasive ant, Wasmannia auropunctata, and described experimental conditions for PCR (polymerase chain reaction) multiplexing and simultaneously genotyping these loci in two sets of five and seven markers. The number of alleles per locus ranged from two to 14 and the observed heterozygosity ranged from 0.233 to 0.967. Moreover, results of cross-species amplification tests are reported in three other species of Wasmannia and in two species of the genus Allomerus |
| Tipo: Journal Article |
Palavras-chave: STRUCTURE GENETIQUE; POLYMORPHISME ANTS; BLEPHARIDATTINI; ESPECE ENVAHISSANTE; MICROSATELLITES; MYRMICINAE; PEST. |
| Ano: 2005 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20074ea97322&uri=/notices/prodinra1/2007/08/ |
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| Fournier, D.; Sabbagh, C.. |
| Depuis 2002, l’Institut National pour la Recherche agronomique (INRA) réalise des expertises scientifiques collectives (ESCo), en appui à la décision publique. L’exercice consiste à répondre à une question complexe posée par un commanditaire public en établissant, sur la base de la bibliographie mondiale, un état des connaissances scientifiques pluridisciplinaires qui fait la part des acquis, des incertitudes, des lacunes et des controverses. L’analyse est réalisée par un groupe d’experts dans une démarche de transparence et d’impartialité. Une charte précise la méthode, l’éthique et les règles de l’exercice. Pour chaque ESCo, un groupe d’experts de différentes disciplines et institutions est constitué. Ils sont tous choisis pour leur expertise et leur... |
| Tipo: Conference Paper |
Palavras-chave: PUBLICATION SCIENTIFIQUE; EXPERTISE SCIENTIFIQUE COLLECTIVE; CONTROVERSE; CONNAISSANCE SCIENTIFIQUE; ETAT DE L'ART. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011c9777501&uri=/notices/prodinra1/2011/01/ |
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| Fournier, D.; Salles, J.C.; Costes, E.; Broquaire, J.M.; Marboutie, G.. |
| Apricot cultivars are characterized by a specific geographic and climatic area and when they grow anywhere else, their production decrease drastically. Such a behavior was described as a consequence of high flower bud drop, numerous flower anomalies, irregularities in floral induction and differentiation. Some authors have also mentioned that tree morphology was affected by location. The present study was based on the assumption of a relationship between the vegetative growth and the flowering potential. Tree architecture was analyzed in different growing areas and growth patterns were compared. Four cultivars were studied (SEO, Orangered, Fantasme and Bergeron) grafted on the same rootstock (Manicot) in the three main apricot production areas in France:... |
| Tipo: Conference Paper |
Palavras-chave: ADAPTATION CLIMATIQUE; RAMIFICATION; CONDITION PEDO-CLIMATIQUE; DIAMETRE; PORT DE L'ARBRE VEGETATIVE GROWTH; BRANCHING; DIAMETER INCREMENT. |
| Ano: 2006 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008a740ac45&uri=/notices/prodinra1/2008/12/ |
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| Orivel, J.; Grangier, J.; Foucaud, J.; Le Breton, J.; Andrès, F.X.; Jourdan, H.; Delabie, J.H.C.; Fournier, D.; Cerdan, P.; Facon, B.; Estoup, A.; Dejean, A.. |
| The biology of most invasive species in their native geographical areas remains largely unknown. Such studies are, however, crucial in shedding light on the ecological and evolutionary processes underlying biological invasions.The present study focuses on the little fire ant 2. Wasmannia auropunctata, a species native to Central and South America that has been widely introduced and which has become invasive throughout the tropics. We characterise and compare several ecological traits of native populations in French Guiana with those in one of its introduced ranges, New Caledonia.We found ecologically heterogeneous populations of 3. W. auropunctata coexisting in the species’ native geographical area. First, we found populations restricted to naturally... |
| Tipo: Journal Article |
Palavras-chave: BIOLOGICAL INVASION; DISTURBANCE; ECOLOGICAL RAITS; NATIVE; WASMANNIA AUROPUNCTATA; AIRE DE REPARTITION NATURELLE; ESPECES INVASIVES; FOURMI DE FEU. |
| Ano: 2010 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011edf5f41a&uri=/notices/prodinra1/2011/06/ |
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| Navajas, M.; Fournier, D.; Lagnel, J.; Gutierrez, Jean-Paul; Boursot, P.. |
| Studies of mitochondrial DNA sequences in a variety of animals have shown important differences between phyla, including differences in the genetic codes used, and varying constraints on base composition. In that respect, little is known of mites, an important and diversified group. We sequenced a portion (340 nt) of the cytochrome oxidase subunit I (COI) encoding gene in twenty species of phytophagous mites belonging to nine genera of the two families #Tetranychidae$ and #Tenuipalpidae$. The mitochondrial genetic code used in mites appeared to be the same as in insects. As is generally also the case in insects, the mite sequences were very rich in A + T (75% on average), especially at the third codon position (94%). However, important variations of base... |
| Tipo: Text |
Palavras-chave: GENETIQUE; ADN; MITOCHONDRIE; CYTOTAXONOMIE. |
| Ano: 1996 |
URL: http://www.documentation.ird.fr/hor/fdi:010007528 |
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| Foucaud, J.; Orivel, J.; Fournier, D.; Delabie, J.H.C.; Loiseau, A.; Le Breton, J.; Cerdans, P.; Estoup, A.. |
| The invasive ant species Wasmannia auropunctata displays both ecologically dominant and non-dominant populations within its native range. Three factors could theoretically explain the ecological dominance of some native populations of W. auropunctata: (i) its clonal reproductive system, through demographic and ⁄ or adaptive advantages; (ii) its unicolonial social organization, through lower intraspecific and efficient interspecific competition; (iii) the human disturbance of its native range, through the modification of biotic and abiotic environmental conditions. We used microsatellite markers and behavioural tests to uncover the reproductive modes and social organization of dominant and non-dominant native populations in natural and human-modified... |
| Tipo: Journal Article |
Palavras-chave: INVASION BIOLOGIQUE; FOURMI DE FEU; FOURMI ELECTRIQUE; BIOTOPE; ORGANISATION SOCIALE BIOLOGICAL INVASION; CLONALITY; HUMAN DISTURBANCE; PARTHENOGENESIS; SOCIAL ORGANIZATION; WASMANNIA AUROPUNCTATA. |
| Ano: 2009 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20104e867d55&uri=/notices/prodinra1/2010/12/ |
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| Avella, M.; Fournier, D.; Pralavorio, M.; Bergé, J.B.. |
| Dans le cadre d’un programme visant à rendre une souche de Phytoseiulus persimilis Athias-Henriot résistant à l’ensemble des produits phytosanitaires, nous avons sélectionné une souche déjà résistante au méthidathion, pour la résistance à la deltaméthrine. Pour cela, nous avons, à intervalles réguliers, traité la population à une dose mortelle pour 50 p. 100 des individus. L’acquisition de cette résistance, bien qu’insuffisante pour que les adultes survivent à une application de deltaméthrine sur le terrain, devrait permettre à cette souche d’être moins affectée par des résidus provenant de traitements antérieurs au lâcher. |
| Tipo: Journal Article |
Palavras-chave: PHYTOSEIULUS PERSIMILIS; DELTAMETHRINE; SELECTION; PHYTOSEIIDAE. |
| Ano: 1985 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB8601043001029&uri=/notices/prodinra1/2009/02/ |
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| Foucaud, J.; Fournier, D.; Orivel, J.; Delabie, J.H.C.; Loiseau, A.; Le Breton, J.; Kergoat, G.; Estoup, A.. |
| Reproduction systems are controlling the creation of new genetic variants as well as how natural selection can operate on these variants. Therefore, they had historically been one of the main foci of evolutionary biology studies. The little fire ant, Wasmannia auropunctata, has been found to display an extraordinary reproduction system, in which both males and female queens are produced clonally. So far, native sexual populations of W. auropunctata have not been identified. Our goals were to identify such sexual populations and investigate the origins of female parthenogenesis and male clonality. Using mitochondrial DNA and microsatellite markers in 17 native populations, we found that traditional sexual populations occurred in W. auropunctata and are... |
| Tipo: Journal Article |
Palavras-chave: FOURMI; INSECTE SOCIAL; REPRODUC TION CLONALE; DETERMINISME GENETIQUE; SYSTEME REPRODUCTEUR REPRODUCTION SYSTEM; SEX; PARTHENOGENESIS; MALE CLONALITY. |
| Ano: 2007 |
URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2008d70ef330&uri=/notices/prodinra1/2008/08/ |
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| Registros recuperados: 18 | |
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